2 5 7 5 3 4 July 8, 2019 16 32 64 128 2 5 x 7 5 x 3 4 2 5 7 1 3 4 2 5 7 8 3 4 2 5 3 5 4 7 y 2 3 x )+ 5 7 5 x )+ 4x 5 2 5 4 3 7 as a fraction 2 5 4x 7 )= 3 6x 5 2 5 7 3 4 9 2 5 6 7 trimetil 5 3 dimetil 4 tert butiloctano 2 3 3 4 x 5 7 5 14